Year Dollars 1992-01-01 13956814 1997-01-01 670382 2002-01-01 5762523 2003-01-01 9661379 2004-01-01 14396110 2005-01-01 16310480 2006-01-01 7507355 2007-01-01 19768382 2008-01-01 34283553 2009-01-01 35210623 2010-01-01 16817655 2011-01-01 27860817 2012-01-01 15817040 2013-01-01 21349902 2014-01-01 19188170 2015-01-01 14631652 2016-01-01 12304199